ford rated the 69 351w @ 290HP stock. thats with a craptastic cam, a weak cast iron dual plane intake, a small carb, and restrictive exhaust. the heads were better than late model heads but worse in stock form than gt40 heads.

so basically, a typical 1500.00 rebuild with flattops, gt40 (or gt40p) junkyard heads, a moderate flat tappet cam, an aftermarket dual plane intake, headers, and a 600-650 cfm carb will make more than 300 @ the flywheel and will be dependable as all hell.

why those kinda numbers would cost 2500 or more is beyond me [&:]

 

that 290 hp rating was the old gross hp method, the 4v 351w in todays standards would be about 230-240 hp.

A 350 hp 351w is a no brainer, it can even be done with ported stock heads, aftermarket heads are way better investment though. If I was doing a 351w again I would use twisted wedge heads, 9.1 compression (so you can run 87 octane) a comp cams xe 274 hr cam but ground on a 108-110 lca, comp link bar roller lifters, 1 5/8 headers, wieand stealth intake or PP typhoon (exact same design) and a speed demon 650 annular carb.

That will get you well over 400 streetable HP, add 50-75 more hp and TQ at a lower rpm with a 393 or 408 stroker kit.

On the cheap I would go everything else the same but a comp cams xe flat tappet cam around 224-230 int, that would save roughly 800.00, twisted wedge heads can be bought for a little over a grand new.

 

just found out today that its a 302...


250cid 1V 6-cyl 99 hp L Code
302cid 2V V-8 141 hp F Code
351cid 2V V-8 177 hp H Code
351cid 4V V-8 266 hp Cobra Jet Q Code

 

OK, so stroke it to a 347!

 

I'd recomand 342 instead, so you don't have to bore out the block (same HP)
Runs cooler too.
That combo is good for 350 ponies with a conservative cam.